Patent 5553697: Overlay for a passenger conveyor roller track
(CONVEYORS: POWER-DRIVEN : CONVEYOR OR ACCESSORY THEREFOR SPECIALIZED TO CONVEY PEOPLE : By stairway having steps forming an endless member : With paired track step levelers : With means synchronizing the operation of the steps and a handrail)

Patent 5553846: System for training a pitcher to pitch a baseball
(GAMES USING TANGIBLE PROJECTILE : PLAYING FIELD OR COURT GAME; GAME ELEMENT OR ACCESSORY THEREFOR OTHER THAN PROJECTOR OR PROJECTILE, PER SE : Practice or training device : For game in which play involves base running (e.g., for baseball, cricket, etc.) : Pitcher`s target : With electrically operated or actuated indicator : Suspension movable in horizontal plane)

Patent 5553847: Versatile pitcher training and proficiency device
(GAMES USING TANGIBLE PROJECTILE : PLAYING FIELD OR COURT GAME; GAME ELEMENT OR ACCESSORY THEREFOR OTHER THAN PROJECTOR OR PROJECTILE, PER SE : Practice or training device : For game in which play involves base running (e.g., for baseball, cricket, etc.) : Bat swing analyzer or guide : Player worn or carried)

Patent 5553848: Multiple sport practice apparatus
(GAMES USING TANGIBLE PROJECTILE : PLAYING FIELD OR COURT GAME; GAME ELEMENT OR ACCESSORY THEREFOR OTHER THAN PROJECTOR OR PROJECTILE, PER SE : Having game element combined with or convertible to game element or practice or training device for different type of projectile game : Shank extends below level of projectile addressing surface)

Patent 5553855: Football kicking practice device
(GAMES USING TANGIBLE PROJECTILE : PLAYING FIELD OR COURT GAME; GAME ELEMENT OR ACCESSORY THEREFOR OTHER THAN PROJECTOR OR PROJECTILE, PER SE : Means removably supporting projectile in position to be struck and thereby projected by player (e.g., batting tee, etc.) : Having means engaging top of projectile (e.g., kicking trainer or tee, etc.) : At acute angle with surface)